Modeling as a method of the didactic system research

In the article some approaches to modeling of the didactic objects and processes are discussed. The various types of models are considered, the classification of models by the various bases is given, the problem of mathematical and computer modeling of the training process is discussed. As an example the three-component model of study by the student of some hypothetical discipline during a semester is analyzed. The model takes into account: 1) the durations of the lessons and intervals between them; 2) the distributions of the educational information and its complexity; 3) the repeated study of separate themes during preparation for control works or examination; 4) the degree of use of the previous themes material. The graphs of the student’s knowledge quantity dependence from time are submitted.